Pumping unit



Oct. 28, 1930. R BANE H 1,779,762

PUMPING UNI T- Filed Dec. 5, 1927 Patented Oct. 28,1930 V v 1 ]79 52 Bonnier 1:. skim; or Los memes; anaemi 7 I 'ru iurmeiuivir hpplication filed December 5,1192? Seria1 Noa237-, G98.

This invention relates to apumping-unit or have Bee i1 omittedinthe 'se "dr avvingsas 7 pump jack and discloses a numberof imdetirilsare knownrin theiart andis tgf be provements thereon. Anobject of this inunderstood:thatvarious modificationsv and vention is to disclose a compact and improved changes inay be made. in the construction, spumping unit ofnovelconstruction. V invention embracingfall structures co 7 A th bj t j o t disclose a pumping Within the scope ofthe claimsg j U unit which is balanced, is capable of hard the drawings;v Figure 1; sho ws asi de and continuous usage Without repairs, is subelevation of Iapumping lunit, =andfFigure 2 I stantially noiseless-and may be adjusted for shows]anendelevation,of-theunit.v I @ochange s in speed of pumping.

Another ob]ect s to' disclose apumping prises agbase l having pillars 2;,35flllCL-4il7h619 unitcontaining aminimumnumber of Workon. Said pillar's'may befunit-ary Withthebase ing parts anchin which thepower'ismost ortheymaylbesuitahlyattachedfltofthebasel effectively'transmitted to the pump. v A motor 5 is mountedupon. the base-ore pore i'es Referring to the;drayvings,ftheunit Com} 60 15 Other objectsandfunctions of thisinvention; thereof and operably;connectedwitha vtion Will become apparent from the later shaftG j urnaled.in pillars2 andi3byrmeans,

more detailed description of-one. preferred f: rockets .7fandi8 and alchainfi, .Iffde' formzofmy, apparatus. 1 siredpa'vvorm and' heel gearsvmaybefused After awell for. example, an oil Well has to impart power to the shaftG "A gear 10 been drilled; the OllflOWSlZQ the surface of mountedon shaftfi engages a: larger-gear l1 9 its own volition for a short time but sooner mounted on a crankshaft-l2isjour; or later it" is necessary topump oil out of naledin the pillars2; and4. Gears l0 and the well? The method customarily used in llmay be either spur gears or screw or helical pumping is to lower a plunger pump down gears such; asherringbone gears.

' :2 intotlie tubing by'means of astring. of sucker The crank shaft 12 has, two cranlisf posi- 75 contemplates the use of substantially direct so-to the cranli 13L rods andltlien pump the. oil out of the; [Well tioned thereon; one near eachrendfofthe shaft. by imparting a reciprocating motion to the The crank L13'is preferably e quipped fwith string of rods andpumpr invention is a detachable counter-Weightjor eights'l't. directed toa pumping-unit designedito operr The sizeof't-his counter-Weight depends-upon f0 ate. a. string of rods or cable andp'um'p. v As the Weight of the s'ucker rods andgtool s in the 80 the Weight of a string of rods 'is considerable Well being pumped or, upon the depth of the in a, deepwell, I- provide a-counter-Weight well. fisecondicrankl'lhis mounted nearthe or counter-balance to assist in raising the other endbfthecrank shaft l2landso ositools and oil. Furthermore, myinvention tionedas tohe directly opposedior practically drive,.utilizing, if desired; an electric motor 7 The pillar eiktending guides V mounted upon; the base ofthe pumpingunit- 16. These guides may; belmade ofi channel andoperably connected therewith by, a suit iron suitably braced: and connected/at the Vahlemeans suchias worm and Wheel'ge'ars o1" 'tpp by" a member 17 andfurther supported I i A sprocket and chain. Theluse of the chain by'means oftie-rod'sl i'and'turn11116151519; 9 i:

drive facilitates changes in the gear ratio Acro'ss'head QOofanysuitableconstruction' and! in: the speed with Which the ell is mountedwithin thelguidemeniberspltiso pumped. Furthermore,theconstruction disas to-allbvva vc'rticaltfree motion to the cross closedby me provides that the drive and'gearhead Within the guide member's. Rollers- 21 '1 545 ing be housed and lubricated constantly all and 22 may be provided between the cross I v as more fully descrihe'd'later. I head? and the guide members soasto take For purposes of illustration, reference Will up the'st'r'ess imposed upon the cross hea'din be made to the attached drawings which all dire'ctions and'reducefrictionlossessvThe show one preferred form of construction of cross heads carries -arhorizonta'l' member 23 my invention. Minor mechanical details ;extendingg out:beyondathe'guide memberslfi we in both directions. The vertical motion is imparted to the horizontal member 23 and to and suitably connected, for example, as indicated, by a ball and socket means'25. The

horizontal member23 is "adapted to receive and hold a polished rod grip or grips 26 so head from the reservoir formed by the cas as to firmly retain the polished rod 27 which passes through a stuffing .box 28 attached to the top of a casing and tubingof thewell 29.

If desired, gears 10, 11 and sprocket 7 may be housed within a casing 30, said casing extendingaround'the space between piers or pillars 2, 3 and 4: so thatlubricant may be contained within the casing and lubrication of the gears and crank shaft bearings facilitated. Lubrication of other bearings andthe cross head within the guides 16 may be acconiplished in any s'uitable manner, for example, by means of a small pump capable of forcing lubricant into the'bearings and cross ing or housing 30 and driven by suitable gearing from the motor '5.

In operation, the pumping unit above described or a mechanicalmodificationthereof is preferably positioned adjacent to a well casing 29 that the distance between the vertical center line of the cross head and the line o fconnection ofthe connecting rod is substantiallyequivalentto the distance be tween the vertical center line of the cross head and the vertical axis of the wellto be pumped. In some cases it maybe desirable to position the pumping unit at some distance from the casing 29-so as not to interfere with the removal of rods'and tools from the well and under these conditions thepolished rod 27 or cable attached thereto is passed over a sheave "located abovethe well, forexample, in the derrick positioned above the well and then attached to the polished rod grip or other attachment mounted upon the horizontal member 23. a I

It is to be noted that power is imparted to the crank shaft 12 at a point between the cranks 13and 15 as' I have found that this arrangement produces the most desirable results. In operating this pumpingunit the weight of the tools androds within the well tubing allows the pump to drop to the bottom of its stroke and whensaid pump and rods are raised the counter-weight 14 mounted on crank 13 assists in pullingthese rods from the well'to the upper end of the stroke.

7 My invention, therefore, comprises a pumpingunit having a base and pillars thereon, a vertical cross head guide, and'a cross head slidably mounted within the guide and operated by means of aconnecting rod and crank mounted upon a crank shaft, a second crank equipped with counter-weights being positioned near the other ,end of the crank and substantially o.pposed to each other,

cranks, a counterweight mounted on one crank 'a connecting ;rod journaled on the other crankand operatively connected with ahorizontal member and vertical crosshead,

said horizontal member and vertical cross a crank shaft journaled in -the-pillars,a crank positioned near each end of said crank shaft,

head being slidably mountedwithin vertical guide means attached to the base,1neans carried by the horizontal member adapted to actuate a pump connection and a housing substantially covering said crank shaft and power transmittingmcans.

2;"A pumping'unitcomprising a base, vertical pillars positioned on the base, a pair ofspaced channeled guidesaextending vertically from one of sa-idpillars, a cross-head between said guides and within saidchannels, rollers carried by saidcross head adapted to contact "with webs of said guide channels, rollers carried by said cross head adapted to contact with flanges 'of said channels, a counter-bal anced crank shaft j ourn'aledin 's'aid-- pillars, a crank carried'by S211ClC1fiIllCShflft,L pitman operably connecting said crank and'c'ross head, and means carried by said. crosshea'd adapted togripand actuate a pump connection;

'3; A pumping unit comprising-a base, v'er tical'pillars positioned on the base, a crank shaft'jou'rnaled in the pillars, a crank mounted near each end of said crank shaft'thereon, a counterweight mounted on one crank, a pair of opposed channele-dguides vertically extending from one of said pillars, across head between said guides and within said channels, a pitman connected to said crosshead and other crank, rollers earned by sa1d cross head adapted to contact with'websof vsaid guide channels, rollers carried by said cross head adapted to contact with flanges ofsaid' channels, a transverse member connecting "the upper ends of said channeled guides, stay means connecting said transverse member to one of'said pillars, a horizontal member carried bysaid cross head and extending'beyond said base, and means carried by the horizontal member adapted to actuatea pump-connection. i

Signed at Los Angeles, California, this 28th day of November, 1927. v

' ROBERT D. 'BANE.

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